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Finding the Fourth Proportional to 275,306.60, 412,959.90 and 97,831.55

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Solution

The fourth proportional to 275,306.60, 412,959.90 and 97,831.55 is: 146,747.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,306.60 : 412,959.90 = 97,831.55 : x
  2. Step 2: Convert to fraction form
    275,306.60/412,959.90 = 97,831.55/x
  3. Step 3: Cross multiply
    275,306.60x = 412,959.90 × 97,831.55
  4. Step 4: Simplify right side
    275,306.60x = 40,400,507,104.85
  5. Step 5: Solve for x
    x = 40,400,507,104.85/275,306.60
  6. Step 6: Final answer
    x = 146,747.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.